Small Engines (Lawn Mowers, etc.): 25 horse kohler v-twin motor problems, fuel flow, air compressor

Question
When I start my craftsman mower, it will only run with the choke wide open.  When I push in the choke, even with the throttle wide open, the mower dies.  I have cleaned the carb, changed the filters, checked fuel flow to the carb.  I am at a loss.  Can you help me?

Answer
Sure sounds like the high speed carburetor circuit is blocked.  Did you blow air, from an air compressor, through all the carburetor orfices to make sure they are clean?  I have had to clean carbs a couple of times to get them working.

Did the problem start all of a sudden or has the mower sat over the winter?

Let me know.
Eric